Example output:
===> Iter 500: | Train acc 0.5807 | Test acc 0.7038
Saved the lastest model to disk
===> Iter 1000: | Train acc 0.7920 | Test acc 0.7545
Saved the lastest model to disk
===> Iter 1500: | Train acc 0.9027 | Test acc 0.7498
Saved the lastest model to disk
===> Iter 2000: | Train acc 0.9240 | Test acc 0.7676
Saved the lastest model to disk
...